GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Windshield Wiper/Washer


Object Number: 628109  Size: FS
Master Electrical Component List
Rear Wiper/Washer
Fuse Block Underhood Fuse: 41 Fuse Block Center Console
Ground G202 - Buick
Ground G202 - Buick
Ground G200 - Buick
Ground G200 - Buick
Ground G200 - Buick
Figure 2:

Rear Wiper/Washer


Object Number: 792011  Size: FS
Master Electrical Component List
Windshield Wiper/Washer
Fuse Block Underhood Fuse: 41 Fuse Block Center Console
Ground G401, 402 and 403-Buick
Ground G200 - Buick